Judge, U.S. Court of Appeals for the Third Circuit
Hon. Jennifer Mascott served as Associate Professor of Law and Director of the Separation of Powers Institute at The Catholic University of America’s Columbus School of Law before her appointment to the federal bench. On July 16, 2025, President Donald J. Trump nominated her to the U.S. Court of Appeals for the Third Circuit (Delaware), and she was confirmed on October 9, 2025.
Prior to her confirmation, Judge Mascott wrote extensively in administrative and constitutional law, statutory interpretation, and the separation of powers. Her scholarship—published in leading journals including the Stanford Law Review, Notre Dame Law Review, and Supreme Court Review—was cited by the U.S. Supreme Court and multiple federal courts. She also contributed Supreme Court commentary for NBC Universal.
Before joining Catholic Law, she was an Assistant Professor and Co-Director of The C. Boyden Gray Center at George Mason University’s Antonin Scalia Law School. In 2022 she became co-author of Beermann, Cass & Diver’s Administrative Law: Cases and Materials (9th ed.). In 2023 she received the Justice Joseph Story Award for excellence in scholarship, teaching, and advancing the rule of law.
Judge Mascott also served as a Council Member of the ABA’s Administrative Law Section and as a Public Member of the Administrative Conference of the United States. She frequently testified before Congress on executive power, regulatory reform, and judicial jurisdiction, and participated in multiple Supreme Court confirmation hearings.
From 2019 to 2021, she took leave from academia to serve as Deputy Assistant Attorney General in the Department of Justice’s Office of Legal Counsel and later as Associate Deputy Attorney General, where she argued federal cases and assisted with Justice Amy Coney Barrett’s confirmation. Earlier in her career, she clerked for Justice Clarence Thomas and for then-Judge Brett M. Kavanaugh on the D.C. Circuit.
Judge Mascott earned her J.D. summa cum laude from the George Washington University Law School and her B.A. from the same institution.
Partner, Consovoy McCarthy PLLC
Thomas R. McCarthy is a partner at Consovoy McCarthy Park PLLC. Mr. McCarthy assists clients with a wide array of issues in federal district and appellate courts across the country. He frequently represents clients in complex litigation involving diverse legal issues arising under the First Amendment, the Equal Protection Clause, the Commerce Clause, and other provisions of the U.S. Constitution. Mr. McCarthy also represents clients in litigation matters involving numerous federal statutes such as the Administrative Procedure Act, the Federal Arbitration Act, the Sherman Act, the Communications Act, the Voting Rights Act, and the Patent Act. He also represents clients with regulatory matters before the Federal Communications Commission, the Federal Trade Commission, and various other federal agencies.
Mr. McCarthy is a former law clerk to Judge David B. Sentelle of the United States Court of Appeals for the D.C. Circuit, and Judge Frank W. Bullock, Jr. of the United States District Court for the Middle District of North Carolina. Since 2011, McCarthy has been the co-director of the George Mason University School of Law Supreme Court Clinic. He previously taught an advanced constitutional law seminar at Mason Law.
Mr. McCarthy earned his BS from the University of Notre Dame, where he was a Notre Dame Scholar, and his JD magna cum laude from George Mason University School of Law. Mr. McCarthy is a member of the Virginia and District of Columbia bars.
George Mason University Foundation Professor of Law, Antonin Scalia Law School, George Mason University
TODD J. ZYWICKI is George Mason University Foundation Professor of Law at Antonin Scalia Law School at George Mason University and Research Fellow of the George Mason Law and Economics Center. During the Fall 2023 semester he served as the Visiting Scholar in Conservative Thought and Policy for the Bruce Benson Center for the Study of Western Civilization at the University of Colorado-Boulder. From 2020-2021 he was Chair of the Consumer Financial Protection Bureau Taskforce on Federal Consumer Financial Law. In 2021 he was inducted to the American College of Consumer Financial Services Lawyers. He is also a Senior Fellow of the F.A. Hayek Program for the Advanced Study of Politics, Philosophy, and Economics at George Mason University and a former Senior Fellow of the Cato Institute. From 2015-2017 he was Executive Director of the George Mason Law and Economics Center. He served as Co-Editor of the Supreme Court Economic Review from 2006-2017. From 2003-2004, Professor Zywicki served as the Director of the Office of Policy Planning at the Federal Trade Commission. He has also taught at Vanderbilt University Law School, Georgetown University Law Center, Boston College Law School, Mississippi College School of Law, and China University of Political Science and Law.
Professor Zywicki clerked for Judge Jerry E. Smith of the U.S. Court of Appeals for the Fifth Circuit and worked as an associate at Alston & Bird in Atlanta, Georgia, where he practiced bankruptcy and commercial law. He received his J.D. from the University of Virginia, where he was executive editor of the Virginia Tax Review and John M. Olin Scholar in Law and Economics. Professor Zywicki also received an M.A. in Economics from Clemson University and an A.B. cum Laude with high honors in his major from Dartmouth College.
Professor Zywicki is also a Lone Mountain Fellow of the Property and Environment Research Center, a Fellow of the International Centre for Economic Research in Turin, Italy, and a former Senior Fellow of the Goldwater Institute. During the Fall 2008 Semester Professor Zywicki was the Searle Fellow of the George Mason University School of Law and was a 2008-09 W. Glenn Campbell and Rita Ricardo-Campbell National Fellow and the Arch W. Shaw National Fellow at the Hoover Institution on War, Revolution and Peace. He has lectured and consulted with government officials around the world, including Iceland, Italy, Japan, and Guatemala. In 2006 Professor Zywicki served as a Member of the United States Department of Justice Study Group on “Identifying Fraud, Abuse and Errors in the United States Bankruptcy System.”
Professor Zywicki is the author of more than 130 articles in leading law reviews and peer-reviewed economics journals. He is one of the Top 10 most-cited law professors in the field of Commercial Law and one of the Top 25 law professors on Twitter as measured by engagement levels. He is one of the Top 50 Most Downloaded Law Authors at the Social Science Research Network. He has testified multiple times before Congress on issues of consumer bankruptcy law and consumer credit and is a frequent commentator on legal issues in the print and broadcast media, including the Wall Street Journal, New York Times, The Washington Post, The Washington Times, Nightline, The Newshour with Jim Lehrer, Neil Cavuto Show, Fox & Friends, Smerconish, Fox News @ Night with Shannon Bream, Fox Business, CNN, CNBC, Bloomberg News, BBC, The Diane Rehm Show, Lou Dobbs Show, Jerry Doyle Show, and The Laura Ingraham Show.
Professor Zywicki is former Chairman and a current member of the Board of Directors of the Competitive Enterprise Institute, and is a member of the Board of Directors of the Institute for Humane Studies, Bill of Rights Institute, the Executive Committee for the Federalist Society's Financial Institutions and E-Commerce Practice Group, the Board of Trustees of the Foundation for Research on Economics and the Environment. He formerly served on the Governing Board and the Advisory Council for the Financial Services Research Program at George Washington University School of Business. He is currently the Chair of the Academic Advisory Council for the following organizations: The Bill of Rights Institute, the film “We the People in IMAX,” and the McCormick-Tribune Foundation “Freedom Museum” in Chicago, Illinois. He is a member of the Board of Visitors of Ralston College and was a member of the Board of Trustees of Yorktown University. From 2005-2009 he served as an elected Alumni Trustee of the Dartmouth College Board of Trustees.
Supreme Court & Appellate Litigation Chair, Lex Politica; Of Counsel, Alliance Defending Freedom
Erin Morrow Hawley serves as Chair of Lex Politica's Supreme Court and Appellate Practice overseeing the firm’s strategic appellate litigation and critical motions practice in the trial courts. Erin is an experienced litigator who represents clients in constitutional, regulatory, and appellate matters in federal and state courts throughout the country.
Erin has represented dozens of clients before the Supreme Court of the United States, served as lead counsel in high-profile cases raising novel constitutional and statutory issues, and authored numerous successful petitions for certiorari and briefs in opposition. She has argued in state and federal appellate and trial courts throughout the country, including the Supreme Court of the United States. Erin represents diverse clients in high-stakes litigation from state governments to faith-based nonprofits to Fortune 100 companies. She possesses expertise on a wide range of subject matters including administrative law, the First Amendment, religious liberty, federal jurisdiction, federal preemption, equitable jurisdiction, tax law, the Affordable Care Act, and Title IX.
Erin represents clients in cases where public communications strategy is paramount. She is a sought-after speaker and writer, has testified multiple times before Congress, and is a frequent presenter on constitutional and administrative law issues, including at the Oxford Union, the National Federalist Society Convention, and university campuses across the country. She is a frequent commentator to media outlets, including Fox News, MSNBC, the Wall Street Journal, WORLD, USA Today, the Federalist, and the Hill.
Erin previously oversaw Alliance Defending Freedom’s--where she still serves as Of Counsel--litigation strategies to empower women and protect the dignity of life, defend pregnancy centers’ First Amendment rights from government overreach, and safeguard Americans’ freedoms from the ever-encroaching administrative state.
Editor, SCOTUSblog
Assistant Professor of Law, George Mason University, Antonin Scalia Law School
Robert Leider is an Assistant Professor of Law at Antonin Scalia Law School, George Mason University. His scholarly interests are in criminal law, criminal procedure, and constitutional law, especially concerning questions about the use of force and the rule of law. He has written on the law of self-defense, the constitutional allocation of military power, and gun control. Among other places, he has published in the Florida Law Review (forthcoming), the Indiana Law Journal, and the Wall Street Journal.
Before joining Antonin Scalia Law School, Professor Leider was at Arnold & Porter in Washington, DC. He was previously with Mayer Brown LLP and was an Olin-Searle-Smith Fellow at the University of Pennsylvania Law School. He has clerked for Judge Diane S. Sykes, of the U.S. Court of Appeals for the Seventh Circuit, and Justice Clarence Thomas. Professor Leider earned a BA, summa cum laude, from The George Washington University, a JD from Yale Law School, and a PhD in Philosophy (dissertation defended with distinction) from Georgetown University. While at Yale, he served as an articles editor for the Yale Law Journal.
Professor Leider teaches criminal law and torts.
Judge, U.S. Court of Appeals for the Third Circuit
Hon. Jennifer Mascott served as Associate Professor of Law and Director of the Separation of Powers Institute at The Catholic University of America’s Columbus School of Law before her appointment to the federal bench. On July 16, 2025, President Donald J. Trump nominated her to the U.S. Court of Appeals for the Third Circuit (Delaware), and she was confirmed on October 9, 2025.
Prior to her confirmation, Judge Mascott wrote extensively in administrative and constitutional law, statutory interpretation, and the separation of powers. Her scholarship—published in leading journals including the Stanford Law Review, Notre Dame Law Review, and Supreme Court Review—was cited by the U.S. Supreme Court and multiple federal courts. She also contributed Supreme Court commentary for NBC Universal.
Before joining Catholic Law, she was an Assistant Professor and Co-Director of The C. Boyden Gray Center at George Mason University’s Antonin Scalia Law School. In 2022 she became co-author of Beermann, Cass & Diver’s Administrative Law: Cases and Materials (9th ed.). In 2023 she received the Justice Joseph Story Award for excellence in scholarship, teaching, and advancing the rule of law.
Judge Mascott also served as a Council Member of the ABA’s Administrative Law Section and as a Public Member of the Administrative Conference of the United States. She frequently testified before Congress on executive power, regulatory reform, and judicial jurisdiction, and participated in multiple Supreme Court confirmation hearings.
From 2019 to 2021, she took leave from academia to serve as Deputy Assistant Attorney General in the Department of Justice’s Office of Legal Counsel and later as Associate Deputy Attorney General, where she argued federal cases and assisted with Justice Amy Coney Barrett’s confirmation. Earlier in her career, she clerked for Justice Clarence Thomas and for then-Judge Brett M. Kavanaugh on the D.C. Circuit.
Judge Mascott earned her J.D. summa cum laude from the George Washington University Law School and her B.A. from the same institution.
President & CEO, National Constitution Center
Jeffrey Rosen is the President and Chief Executive Officer of the National Constitution Center, a nonpartisan nonprofit organization whose mission is to educate the public about the U.S. Constitution. Located steps from Independence Hall in Historic Philadelphia, the Center engages millions of citizens as an interactive museum, national town hall, and provider of nonpartisan resources for civic education. Rosen became President and CEO in 2013 and has developed the Center’s acclaimed Interactive Constitution, which brings together the top conservative and liberal legal scholars in America to discuss areas of agreement and disagreement about every clause of the Constitution. The online resource has received more than 15 million hits since launching in 2015.
Rosen is also professor at The George Washington University Law School and a contributing editor of The Atlantic. He is a highly regarded journalist whose essays and commentaries have appeared in the New York Times Magazine, on National Public Radio, in the New Republic, where he was the legal affairs editor, and The New Yorker, where he was a staff writer. The Chicago Tribune named him one of the 10 best magazine journalists in America and a reviewer for the Los Angeles Timescalled him “the nation’s most widely read and influential legal commentator.”
Rosen is the author of six books including, most recently, a biography of William Howard Taft, published as part of the American Presidents Series. His other books include Louis D. Brandeis: American Prophet; The Supreme Court: The Personalities and Rivalries that Defined America; The Most Democratic Branch: How the Courts Serve America; The Naked Crowd: Reclaiming Security and Freedom in an Anxious Age; and The Unwanted Gaze: The Destruction of Privacy in America. He is co-editor of Constitution 3.0: Freedom and Technological Change.
Rosen is a graduate of Harvard College; Oxford University, where he was a Marshall Scholar; and Yale Law School.
Professor of Law, Georgetown University Law Center
Nicholas Quinn Rosenkranz teaches constitutional law and federal jurisdiction, and he writes articles for the Harvard Law Review and the Stanford Law Review.
He is currently developing a new theory of constitutional interpretation and judicial review. The first installment, entitledThe Subjects of the Constitution, was published in the Stanford Law Review in May of 2010, and it is among the most downloaded articles about constitutional interpretation, judicial review, and/or federal courts in the history of SSRN. The second installment, The Objects of the Constitution, was published in May of 2011, also in the Stanford Law Review. And the comprehensive version is forthcoming as a book by Oxford University Press.
Rosenkranz has served and advised the federal government in a variety of capacities. He clerked for Judge Frank H. Easterbrook on the U.S. Court of Appeals for the Seventh Circuit (1999-2000) and for Justice Anthony M. Kennedy at the U.S. Supreme Court (October Term 2001). He served as an Attorney-Advisor at the Office of Legal Counsel in the U.S. Department of Justice (November 2002 - July 2004). He often testifies before Congress as a constitutional expert—most recently before the House Financial Services Oversight Subcommittee, regarding the Obama Administration's use of bank settlement agreements to circumvent the Appropriations Clause. He has also filed briefs and presented oral argument before the U.S. Supreme Court. His most recent Supreme Court brief, in Los Angeles v. Patel, was cited by Justice Alito in dissent.
Rosenkranz is a member of the New York Bar and the U.S. Supreme Court Bar. He is a Senior Fellow at the Cato Institute. He serves on the Board of Directors of the Foundation for Individual Rights in Education (FIRE). He is a founding member of Heterodox Academy and a member of its Executive Committee. He also serves on the Board of Directors of the Federalist Society and as the faculty advisor to the Georgetown chapter.
Judge, U.S. Court of Appeals for the Third Circuit
Hon. Jennifer Mascott served as Associate Professor of Law and Director of the Separation of Powers Institute at The Catholic University of America’s Columbus School of Law before her appointment to the federal bench. On July 16, 2025, President Donald J. Trump nominated her to the U.S. Court of Appeals for the Third Circuit (Delaware), and she was confirmed on October 9, 2025.
Prior to her confirmation, Judge Mascott wrote extensively in administrative and constitutional law, statutory interpretation, and the separation of powers. Her scholarship—published in leading journals including the Stanford Law Review, Notre Dame Law Review, and Supreme Court Review—was cited by the U.S. Supreme Court and multiple federal courts. She also contributed Supreme Court commentary for NBC Universal.
Before joining Catholic Law, she was an Assistant Professor and Co-Director of The C. Boyden Gray Center at George Mason University’s Antonin Scalia Law School. In 2022 she became co-author of Beermann, Cass & Diver’s Administrative Law: Cases and Materials (9th ed.). In 2023 she received the Justice Joseph Story Award for excellence in scholarship, teaching, and advancing the rule of law.
Judge Mascott also served as a Council Member of the ABA’s Administrative Law Section and as a Public Member of the Administrative Conference of the United States. She frequently testified before Congress on executive power, regulatory reform, and judicial jurisdiction, and participated in multiple Supreme Court confirmation hearings.
From 2019 to 2021, she took leave from academia to serve as Deputy Assistant Attorney General in the Department of Justice’s Office of Legal Counsel and later as Associate Deputy Attorney General, where she argued federal cases and assisted with Justice Amy Coney Barrett’s confirmation. Earlier in her career, she clerked for Justice Clarence Thomas and for then-Judge Brett M. Kavanaugh on the D.C. Circuit.
Judge Mascott earned her J.D. summa cum laude from the George Washington University Law School and her B.A. from the same institution.
Judge, United States Court of Appeals, Third Circuit
Judge Paul Matey was appointed to the United States Court of Appeals for the Third Circuit in 2019 by President Trump.
Before his judicial service, Judge Matey was a partner at Lowenstein Sandler in New Jersey where he practiced complex commercial litigation and criminal defense. Earlier, Judge Matey was the Senior Vice President, General Counsel and Secretary for University Hospital Newark, an academic medical center and teaching hospital.
He also served as the Deputy Chief Counsel to Governor Chris Christie, and as an Assistant United States Attorney in the District of New Jersey, where he was awarded the Justice Department’s Director’s Award for Superior Performance. He also practiced at the Washington D.C. firm of Kellogg, Hansen, Todd, Figel & Frederick, and served as a law clerk to judges on the United States Court of Appeals for the Third Circuit and the United States District Court for the District of New Jersey.
He earned his bachelor’s degree from the University of Scranton, a Jesuit University, in 1993, and his juris doctorate, summa cum laude, from Seton Hall University School of Law in 2001, where he served as Editor-in-Chief of the Seton Hall Law Review.
In 2019, Judge Matey was elected to membership in the American Law Institute and, since 2020, has lectured on administrative law and the American legal history at Seton Hall.
James G. Phillipp Professor of Law, University of Michigan Law School
Julian Davis Mortenson writes on constitutional and international law. His current book project—The Founders' President (under contract, Harvard University Press)—develops a comprehensive account of presidential power at the American Founding. He is also co-authoring a new constitutional law casebook, scheduled for publication by Foundation Press in 2020.
Professor Mortenson is an award-winning teacher and an active litigator. Representative constitutional matters include his work as lead counsel in a pre-Obergefell suit that required Michigan to recognize the marriages of more than 300 same-sex couples; his representation of discharged military service members challenging the "Don't Ask, Don't Tell" law; and his work as one of the principal drafters of the merits briefs in the landmark case Boumediene v. Bush, which secured the right of Guantanamo detainees to challenge their incarceration. He regularly litigates complex transnational matters in the U.S. courts, and has served as arbitrator, counsel, and expert witness in a wide variety of commercial and investor-state disputes.
Before joining the faculty, Professor Mortenson worked at the law firm WilmerHale, in the President's Office of the International Criminal Tribunal for the former Yugoslavia, and as a law clerk for both Justice David H. Souter and The Hon. J. Harvie Wilkinson III. Prior to law school, he was a management consultant with a client portfolio spanning the finance, manufacturing, oil and gas, and information technology industries. Professor Mortenson was salutatorian of his class at Stanford Law School and received an AB in history, summa cum laude, from Harvard College.
James Monroe Distinguished Professor of Law and Albert Clark Tate, Jr., Professor of Law, University of Virginia School of Law
Professor Saikrishna Prakash’s scholarship focuses on separation of powers, particularly executive powers. He teaches Constitutional Law, Foreign Relations Law and Presidential Powers at the Law School.
Prakash’s most recent book, “The Living Presidency: An Originalist Argument Against Its Ever-Expanding Powers,” was published by Harvard Belknap Press in 2020. He also authored “Imperial from the Beginning: The Constitution of the Original Executive” (Yale University Press, 2015). The former book focuses on the modern presidency while the latter considers the presidency of the Founders.
Prakash has authored over 75 law review articles. Among them are “Of Synchronicity and Supreme Law” in the Harvard Law Review, “The Indefensible Duty to Defend” in the Columbia Law Review, and “50 States, 50 Attorneys General and 50 Approaches to the Duty to Defend” and “The Executive Power Over Foreign Affairs” in the Yale Law Journal.
Prakash has published op-eds in The New York Times, The Wall Street Journal and the Los Angeles Times. At the request of Democrats and Republicans, he has testified before Congress on matters of presidential removal, the Mueller Report and how Congress might better check the presidency. He is currently a Miller Center Senior Fellow. In 2015, he received the Roger Traynor award for faculty scholarship. In the same year, he received an honorable mention from the American Society of Legal Writers for his book “Imperial from the Beginning.” He has given named lectures at William & Mary Law School, Princeton University and Toledo Law School, and keynote addresses at several conferences.
Prakash majored in economics and political science at Stanford University. At Yale Law School, he served as senior editor of the Yale Law Journal and received the John M. Olin Fellowship in Law, Economics and Public Policy. He subsequently clerked for Judge Laurence H. Silberman of the U.S. Court of Appeals for the District of Columbia Circuit and for Justice Clarence Thomas of the U.S. Supreme Court. After practicing in New York for two years, he served as a visiting professor at the University of Illinois College of Law and as an associate professor at Boston University School of Law. He then spent several years at the University of San Diego School of Law as the Herzog Research Professor of Law. Prakash has been a visiting professor at Northwestern University and the University of Chicago. He also has served as a James Madison Fellow at Princeton University and Visiting Research Fellow at the Hoover Institution of War & Peace at Stanford University.
Hugh and Hazel Darling Foundation Professor of Law; Director, Center for the Study of Constitutional Originalism, University of San Diego School of Law
Levin, Mabie & Levin Professor of Law, University of Florida Levin College of Law
Professor Gary Lawson joined the University of Florida Levin College of Law faculty on July 1, 2024, after twenty-four years at Boston University School of Law and eleven years at Northwestern University School of Law. While at Boston University, he was named a William Fairfield Warren Distinguished Professor in 2022 – the highest faculty honor within the university. He has authored or co-authored nine editions of a textbook on administrative law, a textbook on constitutional law, five university press books, one popular press book, and more than one hundred scholarly articles on topics ranging from aspects of constitutional theory and history to the proof of legal propositions. His works have been cited in more than twenty opinions of United States Supreme Court justices. He is a founding member, and serves on the Board of Directors, of the Federalist Society for Law and Public Policy Studies and is on the Editorial Advisory Board of the Heritage Guide to the Constitution.
Judge, U.S. Court of Appeals for the Third Circuit
Hon. Jennifer Mascott served as Associate Professor of Law and Director of the Separation of Powers Institute at The Catholic University of America’s Columbus School of Law before her appointment to the federal bench. On July 16, 2025, President Donald J. Trump nominated her to the U.S. Court of Appeals for the Third Circuit (Delaware), and she was confirmed on October 9, 2025.
Prior to her confirmation, Judge Mascott wrote extensively in administrative and constitutional law, statutory interpretation, and the separation of powers. Her scholarship—published in leading journals including the Stanford Law Review, Notre Dame Law Review, and Supreme Court Review—was cited by the U.S. Supreme Court and multiple federal courts. She also contributed Supreme Court commentary for NBC Universal.
Before joining Catholic Law, she was an Assistant Professor and Co-Director of The C. Boyden Gray Center at George Mason University’s Antonin Scalia Law School. In 2022 she became co-author of Beermann, Cass & Diver’s Administrative Law: Cases and Materials (9th ed.). In 2023 she received the Justice Joseph Story Award for excellence in scholarship, teaching, and advancing the rule of law.
Judge Mascott also served as a Council Member of the ABA’s Administrative Law Section and as a Public Member of the Administrative Conference of the United States. She frequently testified before Congress on executive power, regulatory reform, and judicial jurisdiction, and participated in multiple Supreme Court confirmation hearings.
From 2019 to 2021, she took leave from academia to serve as Deputy Assistant Attorney General in the Department of Justice’s Office of Legal Counsel and later as Associate Deputy Attorney General, where she argued federal cases and assisted with Justice Amy Coney Barrett’s confirmation. Earlier in her career, she clerked for Justice Clarence Thomas and for then-Judge Brett M. Kavanaugh on the D.C. Circuit.
Judge Mascott earned her J.D. summa cum laude from the George Washington University Law School and her B.A. from the same institution.
Associate Dean for Academic Affairs, Austin E. Owen Research Scholar & Professor of Law, The University of Richmond School of Law
Dean Kristen Jakobsen Osenga teaches and writes in the areas of patent law, antitrust, and legislation and regulation. Some of her recent scholarship focuses on standard development organizations, patent eligible subject matter, patent licensing firms, litigation and remedies for patent infringement, and patent law reform. She has written numerous law review articles on these and other topics, as well as book chapters and op eds on various aspects of patent law. Additionally, she has spoken on these issues at many academic conferences and bar events. Dean Osenga is Chief Policy Counselor for the Inventors Defense Alliance, as well as an active member of the Federal Circuit Bar Association and the American Intellectual Property Law Association.
Dean Osenga received a B.S. degree in Biomedical Engineering from the University of Iowa, an M.S. degree in Electrical Engineering from Southern Illinois University – Carbondale, and a J.D. from the University of Illinois College of Law, where she graduated magna cum laude. After law school, she practiced at the law firm of Finnegan, Henderson, Farabow, Garrett, & Dunner LLP, (now Finnegan) where she did patent prosecution and litigation. She then clerked for the Judge Richard Linn of the U.S. Court of Appeals for the Federal Circuit. After clerking, she entered academia, teaching first at Chicago-Kent College of Law and then at the University of Richmond, where she has been since 2006. She has also been a Visiting Professor at Emory University School of Law and at William & Mary School of Law.
General Counsel, Unified Patents
Mr. Stroud manages Unified Patents' legal and corporate work, with a focus on Patent Trial and Appeal Board (PTAB), district court, and appellate litigation, contracting, general corporate matters, and settlement negotiations. He regularly teaches, speaks, and writes about patent and administrative law.
Previously, Mr. Stroud was a patent attorney at Finnegan, Henderson, Farabow, Garrett and Dunner LLP, where he was involved in some of the earliest post-grant review work. Before that, he examined patents on implantable medical devices at the U.S. Patent and Trademark Office (USPTO).
Mr. Stroud has been published in the the Columbia Science and Technology Law Review, the Administrative Law Review, the South Carolina Law Review, the American University Law Review, and the New Mexico Law Review, among others. Two of his articles have been selected as a "best IP article" by Thomson West, in 2014 and 2020, respectively.
Professor of Law, University of Michigan Law School
Professor Nicholas Bagley teaches and writes in the areas of administrative law, regulatory theory, and health law. Prior to joining the Law School faculty, he was an attorney with the appellate staff in the Civil Division at the U.S. Department of Justice, where he argued a dozen cases before the U.S. Courts of Appeals and acted as lead counsel in many more. Professor Bagley also served as a law clerk to Justice John Paul Stevens of the U.S. Supreme Court and to the Hon. David S. Tatel of the U.S. Court of Appeals, District of Columbia Circuit. Professor Bagley holds a BA in English from Yale University and received his JD, summa cum laude, from New York University School of Law. Before entering law school, he joined Teach For America and taught eighth-grade English at a public school in South Bronx. Professor Bagley's work has appeared in the Harvard Law Review, the Columbia Law Review, the Georgetown Law Journal, the New England Journal of Medicine, and the Journal of Health Politics, Policy, and Law. In 2012, he was the recipient of the Law School's L. Hart Wright Award for Excellence in Teaching. He is a frequent contributor to The Incidental Economist, a prominent health policy blog.
Maurice and Hilda Friedman Professor of Law, Columbia Law School; CEO, New Civil Liberties Alliance
Philip Hamburger is the Maurice and Hilda Friedman Professor of Law at Columbia Law School, and Chief Executive Officer at the New Civil Liberties Alliance. Before coming to Columbia, he was the John P. Wilson Professor at the University of Chicago Law School.
He writes on constitutional law and its history—with particular emphasis on religious liberty, freedom of speech and the press, judicial office, administrative power, and unconstitutional conditions.
His books are Separation of Church and State (Harvard 2002), Law and Judicial Duty (Harvard 2008), Is Administrative Law Unlawful? (Chicago 2014), The Administrative Threat (Encounter 2017), and Liberal Suppression: Section 501(c)(3) and the Taxation of Speech (Chicago 2018). A forthcoming book is Purchasing Submission: Conditions, Power, and Freedom (Harvard 2021).
He is a member of the American Academy of Arts and Sciences, and he has served on the board of directors of the American Society for Legal History. He has twice received the Sutherland Prize for the most significant contribution to English legal history, and has been awarded the Henry Paolucci - Walter Bagehot Book Award, the Hayek Book Prize, and the Bradley Prize.
Judge, U.S. Court of Appeals for the Third Circuit
Hon. Jennifer Mascott served as Associate Professor of Law and Director of the Separation of Powers Institute at The Catholic University of America’s Columbus School of Law before her appointment to the federal bench. On July 16, 2025, President Donald J. Trump nominated her to the U.S. Court of Appeals for the Third Circuit (Delaware), and she was confirmed on October 9, 2025.
Prior to her confirmation, Judge Mascott wrote extensively in administrative and constitutional law, statutory interpretation, and the separation of powers. Her scholarship—published in leading journals including the Stanford Law Review, Notre Dame Law Review, and Supreme Court Review—was cited by the U.S. Supreme Court and multiple federal courts. She also contributed Supreme Court commentary for NBC Universal.
Before joining Catholic Law, she was an Assistant Professor and Co-Director of The C. Boyden Gray Center at George Mason University’s Antonin Scalia Law School. In 2022 she became co-author of Beermann, Cass & Diver’s Administrative Law: Cases and Materials (9th ed.). In 2023 she received the Justice Joseph Story Award for excellence in scholarship, teaching, and advancing the rule of law.
Judge Mascott also served as a Council Member of the ABA’s Administrative Law Section and as a Public Member of the Administrative Conference of the United States. She frequently testified before Congress on executive power, regulatory reform, and judicial jurisdiction, and participated in multiple Supreme Court confirmation hearings.
From 2019 to 2021, she took leave from academia to serve as Deputy Assistant Attorney General in the Department of Justice’s Office of Legal Counsel and later as Associate Deputy Attorney General, where she argued federal cases and assisted with Justice Amy Coney Barrett’s confirmation. Earlier in her career, she clerked for Justice Clarence Thomas and for then-Judge Brett M. Kavanaugh on the D.C. Circuit.
Judge Mascott earned her J.D. summa cum laude from the George Washington University Law School and her B.A. from the same institution.
William K. Townsend Professor of Law, Yale Law School
Nicholas R. Parrillo is Townsend Professor of Law at Yale, with a secondary appointment as Professor of History. His research and teaching focus on administrative law and government bureaucracy and extend to legal history, remedies, and legislation. He has received the ABA’s award for the year’s best scholarship in administrative law and the Law and Society Association’s Hurst Prize for the year’s best book in legal history.
Parrillo’s Yale Law Journal article finding new originalist evidence of broad congressional delegations to agencies was discussed in the Solicitor General’s winning brief in the Supreme Court’s latest nondelegation case and in the en banc 5th Circuit opinion in that case. His Harvard Law Review article on how the judiciary handles the federal government’s disobedience to court orders has been discussed in The Washington Post, The Wall Street Journal, and The New York Times. Parrillo also authored a study that provided the empirical basis for best practices adopted by the Administrative Conference of the United States (ACUS) on the federal government’s ubiquitous but controversial use of guidance documents. Peer scholars at Jotwell, in selecting the “best new scholarship” in law, selected each of these three publications (one of them twice). Parrillo’s most recent article, invited for GW’s annual administrative law issue, reveals and analyzes dramatic variation among industries in their willingness to sue their federal health-and-safety regulators.
Parrillo has testified before Congress, been quoted by the Supreme Court, is a senior fellow of ACUS, and has been an instructor at the New York Historical Society’s graduate institute and an invited speaker before the 2nd Circuit Judicial Conference, the U.S. Department of Justice (in 2019 and again in 2024), the ACLU’s national legal staff, and the Federalist Society’s national convention (two times). He is a recipient of the Law School’s annual teaching award.
Judge, United States Court of Appeals, District of Columbia Circuit
Judge Rao was appointed to the United States Court of Appeals for the District of Columbia Circuit in March 2019. She graduated from Yale College in 1995 and the University of Chicago Law School in 1999. Following graduation, she served as a law clerk to Judge J. Harvie Wilkinson III of the U.S. Court of Appeals for the Fourth Circuit and, in the 2001 October Term, as law clerk to Justice Clarence Thomas of the U.S. Supreme Court. Between her clerkships, Judge Rao served as counsel for nominations and constitutional law to the U.S. Senate Committee on the Judiciary. In 2002, she joined the international arbitration group of Clifford Chance LLP in London, England. From 2005-2006, she served as Special Assistant and Associate White House Counsel to President George W. Bush. From 2006 to 2017, Judge Rao was a professor at the Antonin Scalia Law School at George Mason University, where she taught constitutional law, legislation and statutory interpretation, and the history and foundations of the administrative state. In 2014, she founded the Center for the Study of the Administrative State, a non-profit Center that promotes academic scholarship and public policy debates about administrative law. In July 2017, she was appointed to serve as the Administrator of the Office of Information and Regulatory Affairs in the Office of Management Budget. She served in this position until her appointment to the D.C. Circuit.
Supreme Court & Appellate Litigation Chair, Lex Politica; Of Counsel, Alliance Defending Freedom
Erin Morrow Hawley serves as Chair of Lex Politica's Supreme Court and Appellate Practice overseeing the firm’s strategic appellate litigation and critical motions practice in the trial courts. Erin is an experienced litigator who represents clients in constitutional, regulatory, and appellate matters in federal and state courts throughout the country.
Erin has represented dozens of clients before the Supreme Court of the United States, served as lead counsel in high-profile cases raising novel constitutional and statutory issues, and authored numerous successful petitions for certiorari and briefs in opposition. She has argued in state and federal appellate and trial courts throughout the country, including the Supreme Court of the United States. Erin represents diverse clients in high-stakes litigation from state governments to faith-based nonprofits to Fortune 100 companies. She possesses expertise on a wide range of subject matters including administrative law, the First Amendment, religious liberty, federal jurisdiction, federal preemption, equitable jurisdiction, tax law, the Affordable Care Act, and Title IX.
Erin represents clients in cases where public communications strategy is paramount. She is a sought-after speaker and writer, has testified multiple times before Congress, and is a frequent presenter on constitutional and administrative law issues, including at the Oxford Union, the National Federalist Society Convention, and university campuses across the country. She is a frequent commentator to media outlets, including Fox News, MSNBC, the Wall Street Journal, WORLD, USA Today, the Federalist, and the Hill.
Erin previously oversaw Alliance Defending Freedom’s--where she still serves as Of Counsel--litigation strategies to empower women and protect the dignity of life, defend pregnancy centers’ First Amendment rights from government overreach, and safeguard Americans’ freedoms from the ever-encroaching administrative state.
Editor, SCOTUSblog
Assistant Professor of Law, George Mason University, Antonin Scalia Law School
Robert Leider is an Assistant Professor of Law at Antonin Scalia Law School, George Mason University. His scholarly interests are in criminal law, criminal procedure, and constitutional law, especially concerning questions about the use of force and the rule of law. He has written on the law of self-defense, the constitutional allocation of military power, and gun control. Among other places, he has published in the Florida Law Review (forthcoming), the Indiana Law Journal, and the Wall Street Journal.
Before joining Antonin Scalia Law School, Professor Leider was at Arnold & Porter in Washington, DC. He was previously with Mayer Brown LLP and was an Olin-Searle-Smith Fellow at the University of Pennsylvania Law School. He has clerked for Judge Diane S. Sykes, of the U.S. Court of Appeals for the Seventh Circuit, and Justice Clarence Thomas. Professor Leider earned a BA, summa cum laude, from The George Washington University, a JD from Yale Law School, and a PhD in Philosophy (dissertation defended with distinction) from Georgetown University. While at Yale, he served as an articles editor for the Yale Law Journal.
Professor Leider teaches criminal law and torts.
Judge, U.S. Court of Appeals for the Third Circuit
Hon. Jennifer Mascott served as Associate Professor of Law and Director of the Separation of Powers Institute at The Catholic University of America’s Columbus School of Law before her appointment to the federal bench. On July 16, 2025, President Donald J. Trump nominated her to the U.S. Court of Appeals for the Third Circuit (Delaware), and she was confirmed on October 9, 2025.
Prior to her confirmation, Judge Mascott wrote extensively in administrative and constitutional law, statutory interpretation, and the separation of powers. Her scholarship—published in leading journals including the Stanford Law Review, Notre Dame Law Review, and Supreme Court Review—was cited by the U.S. Supreme Court and multiple federal courts. She also contributed Supreme Court commentary for NBC Universal.
Before joining Catholic Law, she was an Assistant Professor and Co-Director of The C. Boyden Gray Center at George Mason University’s Antonin Scalia Law School. In 2022 she became co-author of Beermann, Cass & Diver’s Administrative Law: Cases and Materials (9th ed.). In 2023 she received the Justice Joseph Story Award for excellence in scholarship, teaching, and advancing the rule of law.
Judge Mascott also served as a Council Member of the ABA’s Administrative Law Section and as a Public Member of the Administrative Conference of the United States. She frequently testified before Congress on executive power, regulatory reform, and judicial jurisdiction, and participated in multiple Supreme Court confirmation hearings.
From 2019 to 2021, she took leave from academia to serve as Deputy Assistant Attorney General in the Department of Justice’s Office of Legal Counsel and later as Associate Deputy Attorney General, where she argued federal cases and assisted with Justice Amy Coney Barrett’s confirmation. Earlier in her career, she clerked for Justice Clarence Thomas and for then-Judge Brett M. Kavanaugh on the D.C. Circuit.
Judge Mascott earned her J.D. summa cum laude from the George Washington University Law School and her B.A. from the same institution.
President & CEO, National Constitution Center
Jeffrey Rosen is the President and Chief Executive Officer of the National Constitution Center, a nonpartisan nonprofit organization whose mission is to educate the public about the U.S. Constitution. Located steps from Independence Hall in Historic Philadelphia, the Center engages millions of citizens as an interactive museum, national town hall, and provider of nonpartisan resources for civic education. Rosen became President and CEO in 2013 and has developed the Center’s acclaimed Interactive Constitution, which brings together the top conservative and liberal legal scholars in America to discuss areas of agreement and disagreement about every clause of the Constitution. The online resource has received more than 15 million hits since launching in 2015.
Rosen is also professor at The George Washington University Law School and a contributing editor of The Atlantic. He is a highly regarded journalist whose essays and commentaries have appeared in the New York Times Magazine, on National Public Radio, in the New Republic, where he was the legal affairs editor, and The New Yorker, where he was a staff writer. The Chicago Tribune named him one of the 10 best magazine journalists in America and a reviewer for the Los Angeles Timescalled him “the nation’s most widely read and influential legal commentator.”
Rosen is the author of six books including, most recently, a biography of William Howard Taft, published as part of the American Presidents Series. His other books include Louis D. Brandeis: American Prophet; The Supreme Court: The Personalities and Rivalries that Defined America; The Most Democratic Branch: How the Courts Serve America; The Naked Crowd: Reclaiming Security and Freedom in an Anxious Age; and The Unwanted Gaze: The Destruction of Privacy in America. He is co-editor of Constitution 3.0: Freedom and Technological Change.
Rosen is a graduate of Harvard College; Oxford University, where he was a Marshall Scholar; and Yale Law School.
Professor of Law, Georgetown University Law Center
Nicholas Quinn Rosenkranz teaches constitutional law and federal jurisdiction, and he writes articles for the Harvard Law Review and the Stanford Law Review.
He is currently developing a new theory of constitutional interpretation and judicial review. The first installment, entitledThe Subjects of the Constitution, was published in the Stanford Law Review in May of 2010, and it is among the most downloaded articles about constitutional interpretation, judicial review, and/or federal courts in the history of SSRN. The second installment, The Objects of the Constitution, was published in May of 2011, also in the Stanford Law Review. And the comprehensive version is forthcoming as a book by Oxford University Press.
Rosenkranz has served and advised the federal government in a variety of capacities. He clerked for Judge Frank H. Easterbrook on the U.S. Court of Appeals for the Seventh Circuit (1999-2000) and for Justice Anthony M. Kennedy at the U.S. Supreme Court (October Term 2001). He served as an Attorney-Advisor at the Office of Legal Counsel in the U.S. Department of Justice (November 2002 - July 2004). He often testifies before Congress as a constitutional expert—most recently before the House Financial Services Oversight Subcommittee, regarding the Obama Administration's use of bank settlement agreements to circumvent the Appropriations Clause. He has also filed briefs and presented oral argument before the U.S. Supreme Court. His most recent Supreme Court brief, in Los Angeles v. Patel, was cited by Justice Alito in dissent.
Rosenkranz is a member of the New York Bar and the U.S. Supreme Court Bar. He is a Senior Fellow at the Cato Institute. He serves on the Board of Directors of the Foundation for Individual Rights in Education (FIRE). He is a founding member of Heterodox Academy and a member of its Executive Committee. He also serves on the Board of Directors of the Federalist Society and as the faculty advisor to the Georgetown chapter.
Judge, U.S. Court of Appeals for the Third Circuit
Hon. Jennifer Mascott served as Associate Professor of Law and Director of the Separation of Powers Institute at The Catholic University of America’s Columbus School of Law before her appointment to the federal bench. On July 16, 2025, President Donald J. Trump nominated her to the U.S. Court of Appeals for the Third Circuit (Delaware), and she was confirmed on October 9, 2025.
Prior to her confirmation, Judge Mascott wrote extensively in administrative and constitutional law, statutory interpretation, and the separation of powers. Her scholarship—published in leading journals including the Stanford Law Review, Notre Dame Law Review, and Supreme Court Review—was cited by the U.S. Supreme Court and multiple federal courts. She also contributed Supreme Court commentary for NBC Universal.
Before joining Catholic Law, she was an Assistant Professor and Co-Director of The C. Boyden Gray Center at George Mason University’s Antonin Scalia Law School. In 2022 she became co-author of Beermann, Cass & Diver’s Administrative Law: Cases and Materials (9th ed.). In 2023 she received the Justice Joseph Story Award for excellence in scholarship, teaching, and advancing the rule of law.
Judge Mascott also served as a Council Member of the ABA’s Administrative Law Section and as a Public Member of the Administrative Conference of the United States. She frequently testified before Congress on executive power, regulatory reform, and judicial jurisdiction, and participated in multiple Supreme Court confirmation hearings.
From 2019 to 2021, she took leave from academia to serve as Deputy Assistant Attorney General in the Department of Justice’s Office of Legal Counsel and later as Associate Deputy Attorney General, where she argued federal cases and assisted with Justice Amy Coney Barrett’s confirmation. Earlier in her career, she clerked for Justice Clarence Thomas and for then-Judge Brett M. Kavanaugh on the D.C. Circuit.
Judge Mascott earned her J.D. summa cum laude from the George Washington University Law School and her B.A. from the same institution.
Judge, United States Court of Appeals, Third Circuit
Judge Paul Matey was appointed to the United States Court of Appeals for the Third Circuit in 2019 by President Trump.
Before his judicial service, Judge Matey was a partner at Lowenstein Sandler in New Jersey where he practiced complex commercial litigation and criminal defense. Earlier, Judge Matey was the Senior Vice President, General Counsel and Secretary for University Hospital Newark, an academic medical center and teaching hospital.
He also served as the Deputy Chief Counsel to Governor Chris Christie, and as an Assistant United States Attorney in the District of New Jersey, where he was awarded the Justice Department’s Director’s Award for Superior Performance. He also practiced at the Washington D.C. firm of Kellogg, Hansen, Todd, Figel & Frederick, and served as a law clerk to judges on the United States Court of Appeals for the Third Circuit and the United States District Court for the District of New Jersey.
He earned his bachelor’s degree from the University of Scranton, a Jesuit University, in 1993, and his juris doctorate, summa cum laude, from Seton Hall University School of Law in 2001, where he served as Editor-in-Chief of the Seton Hall Law Review.
In 2019, Judge Matey was elected to membership in the American Law Institute and, since 2020, has lectured on administrative law and the American legal history at Seton Hall.
James G. Phillipp Professor of Law, University of Michigan Law School
Julian Davis Mortenson writes on constitutional and international law. His current book project—The Founders' President (under contract, Harvard University Press)—develops a comprehensive account of presidential power at the American Founding. He is also co-authoring a new constitutional law casebook, scheduled for publication by Foundation Press in 2020.
Professor Mortenson is an award-winning teacher and an active litigator. Representative constitutional matters include his work as lead counsel in a pre-Obergefell suit that required Michigan to recognize the marriages of more than 300 same-sex couples; his representation of discharged military service members challenging the "Don't Ask, Don't Tell" law; and his work as one of the principal drafters of the merits briefs in the landmark case Boumediene v. Bush, which secured the right of Guantanamo detainees to challenge their incarceration. He regularly litigates complex transnational matters in the U.S. courts, and has served as arbitrator, counsel, and expert witness in a wide variety of commercial and investor-state disputes.
Before joining the faculty, Professor Mortenson worked at the law firm WilmerHale, in the President's Office of the International Criminal Tribunal for the former Yugoslavia, and as a law clerk for both Justice David H. Souter and The Hon. J. Harvie Wilkinson III. Prior to law school, he was a management consultant with a client portfolio spanning the finance, manufacturing, oil and gas, and information technology industries. Professor Mortenson was salutatorian of his class at Stanford Law School and received an AB in history, summa cum laude, from Harvard College.
James Monroe Distinguished Professor of Law and Albert Clark Tate, Jr., Professor of Law, University of Virginia School of Law
Professor Saikrishna Prakash’s scholarship focuses on separation of powers, particularly executive powers. He teaches Constitutional Law, Foreign Relations Law and Presidential Powers at the Law School.
Prakash’s most recent book, “The Living Presidency: An Originalist Argument Against Its Ever-Expanding Powers,” was published by Harvard Belknap Press in 2020. He also authored “Imperial from the Beginning: The Constitution of the Original Executive” (Yale University Press, 2015). The former book focuses on the modern presidency while the latter considers the presidency of the Founders.
Prakash has authored over 75 law review articles. Among them are “Of Synchronicity and Supreme Law” in the Harvard Law Review, “The Indefensible Duty to Defend” in the Columbia Law Review, and “50 States, 50 Attorneys General and 50 Approaches to the Duty to Defend” and “The Executive Power Over Foreign Affairs” in the Yale Law Journal.
Prakash has published op-eds in The New York Times, The Wall Street Journal and the Los Angeles Times. At the request of Democrats and Republicans, he has testified before Congress on matters of presidential removal, the Mueller Report and how Congress might better check the presidency. He is currently a Miller Center Senior Fellow. In 2015, he received the Roger Traynor award for faculty scholarship. In the same year, he received an honorable mention from the American Society of Legal Writers for his book “Imperial from the Beginning.” He has given named lectures at William & Mary Law School, Princeton University and Toledo Law School, and keynote addresses at several conferences.
Prakash majored in economics and political science at Stanford University. At Yale Law School, he served as senior editor of the Yale Law Journal and received the John M. Olin Fellowship in Law, Economics and Public Policy. He subsequently clerked for Judge Laurence H. Silberman of the U.S. Court of Appeals for the District of Columbia Circuit and for Justice Clarence Thomas of the U.S. Supreme Court. After practicing in New York for two years, he served as a visiting professor at the University of Illinois College of Law and as an associate professor at Boston University School of Law. He then spent several years at the University of San Diego School of Law as the Herzog Research Professor of Law. Prakash has been a visiting professor at Northwestern University and the University of Chicago. He also has served as a James Madison Fellow at Princeton University and Visiting Research Fellow at the Hoover Institution of War & Peace at Stanford University.
Hugh and Hazel Darling Foundation Professor of Law; Director, Center for the Study of Constitutional Originalism, University of San Diego School of Law
Judge, U.S. Court of Appeals for the Third Circuit
Hon. Jennifer Mascott served as Associate Professor of Law and Director of the Separation of Powers Institute at The Catholic University of America’s Columbus School of Law before her appointment to the federal bench. On July 16, 2025, President Donald J. Trump nominated her to the U.S. Court of Appeals for the Third Circuit (Delaware), and she was confirmed on October 9, 2025.
Prior to her confirmation, Judge Mascott wrote extensively in administrative and constitutional law, statutory interpretation, and the separation of powers. Her scholarship—published in leading journals including the Stanford Law Review, Notre Dame Law Review, and Supreme Court Review—was cited by the U.S. Supreme Court and multiple federal courts. She also contributed Supreme Court commentary for NBC Universal.
Before joining Catholic Law, she was an Assistant Professor and Co-Director of The C. Boyden Gray Center at George Mason University’s Antonin Scalia Law School. In 2022 she became co-author of Beermann, Cass & Diver’s Administrative Law: Cases and Materials (9th ed.). In 2023 she received the Justice Joseph Story Award for excellence in scholarship, teaching, and advancing the rule of law.
Judge Mascott also served as a Council Member of the ABA’s Administrative Law Section and as a Public Member of the Administrative Conference of the United States. She frequently testified before Congress on executive power, regulatory reform, and judicial jurisdiction, and participated in multiple Supreme Court confirmation hearings.
From 2019 to 2021, she took leave from academia to serve as Deputy Assistant Attorney General in the Department of Justice’s Office of Legal Counsel and later as Associate Deputy Attorney General, where she argued federal cases and assisted with Justice Amy Coney Barrett’s confirmation. Earlier in her career, she clerked for Justice Clarence Thomas and for then-Judge Brett M. Kavanaugh on the D.C. Circuit.
Judge Mascott earned her J.D. summa cum laude from the George Washington University Law School and her B.A. from the same institution.
Judge, United States Court of Appeals, Third Circuit
Judge Paul Matey was appointed to the United States Court of Appeals for the Third Circuit in 2019 by President Trump.
Before his judicial service, Judge Matey was a partner at Lowenstein Sandler in New Jersey where he practiced complex commercial litigation and criminal defense. Earlier, Judge Matey was the Senior Vice President, General Counsel and Secretary for University Hospital Newark, an academic medical center and teaching hospital.
He also served as the Deputy Chief Counsel to Governor Chris Christie, and as an Assistant United States Attorney in the District of New Jersey, where he was awarded the Justice Department’s Director’s Award for Superior Performance. He also practiced at the Washington D.C. firm of Kellogg, Hansen, Todd, Figel & Frederick, and served as a law clerk to judges on the United States Court of Appeals for the Third Circuit and the United States District Court for the District of New Jersey.
He earned his bachelor’s degree from the University of Scranton, a Jesuit University, in 1993, and his juris doctorate, summa cum laude, from Seton Hall University School of Law in 2001, where he served as Editor-in-Chief of the Seton Hall Law Review.
In 2019, Judge Matey was elected to membership in the American Law Institute and, since 2020, has lectured on administrative law and the American legal history at Seton Hall.
James G. Phillipp Professor of Law, University of Michigan Law School
Julian Davis Mortenson writes on constitutional and international law. His current book project—The Founders' President (under contract, Harvard University Press)—develops a comprehensive account of presidential power at the American Founding. He is also co-authoring a new constitutional law casebook, scheduled for publication by Foundation Press in 2020.
Professor Mortenson is an award-winning teacher and an active litigator. Representative constitutional matters include his work as lead counsel in a pre-Obergefell suit that required Michigan to recognize the marriages of more than 300 same-sex couples; his representation of discharged military service members challenging the "Don't Ask, Don't Tell" law; and his work as one of the principal drafters of the merits briefs in the landmark case Boumediene v. Bush, which secured the right of Guantanamo detainees to challenge their incarceration. He regularly litigates complex transnational matters in the U.S. courts, and has served as arbitrator, counsel, and expert witness in a wide variety of commercial and investor-state disputes.
Before joining the faculty, Professor Mortenson worked at the law firm WilmerHale, in the President's Office of the International Criminal Tribunal for the former Yugoslavia, and as a law clerk for both Justice David H. Souter and The Hon. J. Harvie Wilkinson III. Prior to law school, he was a management consultant with a client portfolio spanning the finance, manufacturing, oil and gas, and information technology industries. Professor Mortenson was salutatorian of his class at Stanford Law School and received an AB in history, summa cum laude, from Harvard College.
James Monroe Distinguished Professor of Law and Albert Clark Tate, Jr., Professor of Law, University of Virginia School of Law
Professor Saikrishna Prakash’s scholarship focuses on separation of powers, particularly executive powers. He teaches Constitutional Law, Foreign Relations Law and Presidential Powers at the Law School.
Prakash’s most recent book, “The Living Presidency: An Originalist Argument Against Its Ever-Expanding Powers,” was published by Harvard Belknap Press in 2020. He also authored “Imperial from the Beginning: The Constitution of the Original Executive” (Yale University Press, 2015). The former book focuses on the modern presidency while the latter considers the presidency of the Founders.
Prakash has authored over 75 law review articles. Among them are “Of Synchronicity and Supreme Law” in the Harvard Law Review, “The Indefensible Duty to Defend” in the Columbia Law Review, and “50 States, 50 Attorneys General and 50 Approaches to the Duty to Defend” and “The Executive Power Over Foreign Affairs” in the Yale Law Journal.
Prakash has published op-eds in The New York Times, The Wall Street Journal and the Los Angeles Times. At the request of Democrats and Republicans, he has testified before Congress on matters of presidential removal, the Mueller Report and how Congress might better check the presidency. He is currently a Miller Center Senior Fellow. In 2015, he received the Roger Traynor award for faculty scholarship. In the same year, he received an honorable mention from the American Society of Legal Writers for his book “Imperial from the Beginning.” He has given named lectures at William & Mary Law School, Princeton University and Toledo Law School, and keynote addresses at several conferences.
Prakash majored in economics and political science at Stanford University. At Yale Law School, he served as senior editor of the Yale Law Journal and received the John M. Olin Fellowship in Law, Economics and Public Policy. He subsequently clerked for Judge Laurence H. Silberman of the U.S. Court of Appeals for the District of Columbia Circuit and for Justice Clarence Thomas of the U.S. Supreme Court. After practicing in New York for two years, he served as a visiting professor at the University of Illinois College of Law and as an associate professor at Boston University School of Law. He then spent several years at the University of San Diego School of Law as the Herzog Research Professor of Law. Prakash has been a visiting professor at Northwestern University and the University of Chicago. He also has served as a James Madison Fellow at Princeton University and Visiting Research Fellow at the Hoover Institution of War & Peace at Stanford University.
Hugh and Hazel Darling Foundation Professor of Law; Director, Center for the Study of Constitutional Originalism, University of San Diego School of Law
Levin, Mabie & Levin Professor of Law, University of Florida Levin College of Law
Professor Gary Lawson joined the University of Florida Levin College of Law faculty on July 1, 2024, after twenty-four years at Boston University School of Law and eleven years at Northwestern University School of Law. While at Boston University, he was named a William Fairfield Warren Distinguished Professor in 2022 – the highest faculty honor within the university. He has authored or co-authored nine editions of a textbook on administrative law, a textbook on constitutional law, five university press books, one popular press book, and more than one hundred scholarly articles on topics ranging from aspects of constitutional theory and history to the proof of legal propositions. His works have been cited in more than twenty opinions of United States Supreme Court justices. He is a founding member, and serves on the Board of Directors, of the Federalist Society for Law and Public Policy Studies and is on the Editorial Advisory Board of the Heritage Guide to the Constitution.
Judge, U.S. Court of Appeals for the Third Circuit
Hon. Jennifer Mascott served as Associate Professor of Law and Director of the Separation of Powers Institute at The Catholic University of America’s Columbus School of Law before her appointment to the federal bench. On July 16, 2025, President Donald J. Trump nominated her to the U.S. Court of Appeals for the Third Circuit (Delaware), and she was confirmed on October 9, 2025.
Prior to her confirmation, Judge Mascott wrote extensively in administrative and constitutional law, statutory interpretation, and the separation of powers. Her scholarship—published in leading journals including the Stanford Law Review, Notre Dame Law Review, and Supreme Court Review—was cited by the U.S. Supreme Court and multiple federal courts. She also contributed Supreme Court commentary for NBC Universal.
Before joining Catholic Law, she was an Assistant Professor and Co-Director of The C. Boyden Gray Center at George Mason University’s Antonin Scalia Law School. In 2022 she became co-author of Beermann, Cass & Diver’s Administrative Law: Cases and Materials (9th ed.). In 2023 she received the Justice Joseph Story Award for excellence in scholarship, teaching, and advancing the rule of law.
Judge Mascott also served as a Council Member of the ABA’s Administrative Law Section and as a Public Member of the Administrative Conference of the United States. She frequently testified before Congress on executive power, regulatory reform, and judicial jurisdiction, and participated in multiple Supreme Court confirmation hearings.
From 2019 to 2021, she took leave from academia to serve as Deputy Assistant Attorney General in the Department of Justice’s Office of Legal Counsel and later as Associate Deputy Attorney General, where she argued federal cases and assisted with Justice Amy Coney Barrett’s confirmation. Earlier in her career, she clerked for Justice Clarence Thomas and for then-Judge Brett M. Kavanaugh on the D.C. Circuit.
Judge Mascott earned her J.D. summa cum laude from the George Washington University Law School and her B.A. from the same institution.
Associate Dean for Academic Affairs, Austin E. Owen Research Scholar & Professor of Law, The University of Richmond School of Law
Dean Kristen Jakobsen Osenga teaches and writes in the areas of patent law, antitrust, and legislation and regulation. Some of her recent scholarship focuses on standard development organizations, patent eligible subject matter, patent licensing firms, litigation and remedies for patent infringement, and patent law reform. She has written numerous law review articles on these and other topics, as well as book chapters and op eds on various aspects of patent law. Additionally, she has spoken on these issues at many academic conferences and bar events. Dean Osenga is Chief Policy Counselor for the Inventors Defense Alliance, as well as an active member of the Federal Circuit Bar Association and the American Intellectual Property Law Association.
Dean Osenga received a B.S. degree in Biomedical Engineering from the University of Iowa, an M.S. degree in Electrical Engineering from Southern Illinois University – Carbondale, and a J.D. from the University of Illinois College of Law, where she graduated magna cum laude. After law school, she practiced at the law firm of Finnegan, Henderson, Farabow, Garrett, & Dunner LLP, (now Finnegan) where she did patent prosecution and litigation. She then clerked for the Judge Richard Linn of the U.S. Court of Appeals for the Federal Circuit. After clerking, she entered academia, teaching first at Chicago-Kent College of Law and then at the University of Richmond, where she has been since 2006. She has also been a Visiting Professor at Emory University School of Law and at William & Mary School of Law.
General Counsel, Unified Patents
Mr. Stroud manages Unified Patents' legal and corporate work, with a focus on Patent Trial and Appeal Board (PTAB), district court, and appellate litigation, contracting, general corporate matters, and settlement negotiations. He regularly teaches, speaks, and writes about patent and administrative law.
Previously, Mr. Stroud was a patent attorney at Finnegan, Henderson, Farabow, Garrett and Dunner LLP, where he was involved in some of the earliest post-grant review work. Before that, he examined patents on implantable medical devices at the U.S. Patent and Trademark Office (USPTO).
Mr. Stroud has been published in the the Columbia Science and Technology Law Review, the Administrative Law Review, the South Carolina Law Review, the American University Law Review, and the New Mexico Law Review, among others. Two of his articles have been selected as a "best IP article" by Thomson West, in 2014 and 2020, respectively.
Professor of Law, University of Michigan Law School
Professor Nicholas Bagley teaches and writes in the areas of administrative law, regulatory theory, and health law. Prior to joining the Law School faculty, he was an attorney with the appellate staff in the Civil Division at the U.S. Department of Justice, where he argued a dozen cases before the U.S. Courts of Appeals and acted as lead counsel in many more. Professor Bagley also served as a law clerk to Justice John Paul Stevens of the U.S. Supreme Court and to the Hon. David S. Tatel of the U.S. Court of Appeals, District of Columbia Circuit. Professor Bagley holds a BA in English from Yale University and received his JD, summa cum laude, from New York University School of Law. Before entering law school, he joined Teach For America and taught eighth-grade English at a public school in South Bronx. Professor Bagley's work has appeared in the Harvard Law Review, the Columbia Law Review, the Georgetown Law Journal, the New England Journal of Medicine, and the Journal of Health Politics, Policy, and Law. In 2012, he was the recipient of the Law School's L. Hart Wright Award for Excellence in Teaching. He is a frequent contributor to The Incidental Economist, a prominent health policy blog.
Maurice and Hilda Friedman Professor of Law, Columbia Law School; CEO, New Civil Liberties Alliance
Philip Hamburger is the Maurice and Hilda Friedman Professor of Law at Columbia Law School, and Chief Executive Officer at the New Civil Liberties Alliance. Before coming to Columbia, he was the John P. Wilson Professor at the University of Chicago Law School.
He writes on constitutional law and its history—with particular emphasis on religious liberty, freedom of speech and the press, judicial office, administrative power, and unconstitutional conditions.
His books are Separation of Church and State (Harvard 2002), Law and Judicial Duty (Harvard 2008), Is Administrative Law Unlawful? (Chicago 2014), The Administrative Threat (Encounter 2017), and Liberal Suppression: Section 501(c)(3) and the Taxation of Speech (Chicago 2018). A forthcoming book is Purchasing Submission: Conditions, Power, and Freedom (Harvard 2021).
He is a member of the American Academy of Arts and Sciences, and he has served on the board of directors of the American Society for Legal History. He has twice received the Sutherland Prize for the most significant contribution to English legal history, and has been awarded the Henry Paolucci - Walter Bagehot Book Award, the Hayek Book Prize, and the Bradley Prize.
Judge, U.S. Court of Appeals for the Third Circuit
Hon. Jennifer Mascott served as Associate Professor of Law and Director of the Separation of Powers Institute at The Catholic University of America’s Columbus School of Law before her appointment to the federal bench. On July 16, 2025, President Donald J. Trump nominated her to the U.S. Court of Appeals for the Third Circuit (Delaware), and she was confirmed on October 9, 2025.
Prior to her confirmation, Judge Mascott wrote extensively in administrative and constitutional law, statutory interpretation, and the separation of powers. Her scholarship—published in leading journals including the Stanford Law Review, Notre Dame Law Review, and Supreme Court Review—was cited by the U.S. Supreme Court and multiple federal courts. She also contributed Supreme Court commentary for NBC Universal.
Before joining Catholic Law, she was an Assistant Professor and Co-Director of The C. Boyden Gray Center at George Mason University’s Antonin Scalia Law School. In 2022 she became co-author of Beermann, Cass & Diver’s Administrative Law: Cases and Materials (9th ed.). In 2023 she received the Justice Joseph Story Award for excellence in scholarship, teaching, and advancing the rule of law.
Judge Mascott also served as a Council Member of the ABA’s Administrative Law Section and as a Public Member of the Administrative Conference of the United States. She frequently testified before Congress on executive power, regulatory reform, and judicial jurisdiction, and participated in multiple Supreme Court confirmation hearings.
From 2019 to 2021, she took leave from academia to serve as Deputy Assistant Attorney General in the Department of Justice’s Office of Legal Counsel and later as Associate Deputy Attorney General, where she argued federal cases and assisted with Justice Amy Coney Barrett’s confirmation. Earlier in her career, she clerked for Justice Clarence Thomas and for then-Judge Brett M. Kavanaugh on the D.C. Circuit.
Judge Mascott earned her J.D. summa cum laude from the George Washington University Law School and her B.A. from the same institution.
William K. Townsend Professor of Law, Yale Law School
Nicholas R. Parrillo is Townsend Professor of Law at Yale, with a secondary appointment as Professor of History. His research and teaching focus on administrative law and government bureaucracy and extend to legal history, remedies, and legislation. He has received the ABA’s award for the year’s best scholarship in administrative law and the Law and Society Association’s Hurst Prize for the year’s best book in legal history.
Parrillo’s Yale Law Journal article finding new originalist evidence of broad congressional delegations to agencies was discussed in the Solicitor General’s winning brief in the Supreme Court’s latest nondelegation case and in the en banc 5th Circuit opinion in that case. His Harvard Law Review article on how the judiciary handles the federal government’s disobedience to court orders has been discussed in The Washington Post, The Wall Street Journal, and The New York Times. Parrillo also authored a study that provided the empirical basis for best practices adopted by the Administrative Conference of the United States (ACUS) on the federal government’s ubiquitous but controversial use of guidance documents. Peer scholars at Jotwell, in selecting the “best new scholarship” in law, selected each of these three publications (one of them twice). Parrillo’s most recent article, invited for GW’s annual administrative law issue, reveals and analyzes dramatic variation among industries in their willingness to sue their federal health-and-safety regulators.
Parrillo has testified before Congress, been quoted by the Supreme Court, is a senior fellow of ACUS, and has been an instructor at the New York Historical Society’s graduate institute and an invited speaker before the 2nd Circuit Judicial Conference, the U.S. Department of Justice (in 2019 and again in 2024), the ACLU’s national legal staff, and the Federalist Society’s national convention (two times). He is a recipient of the Law School’s annual teaching award.
Judge, United States Court of Appeals, District of Columbia Circuit
Judge Rao was appointed to the United States Court of Appeals for the District of Columbia Circuit in March 2019. She graduated from Yale College in 1995 and the University of Chicago Law School in 1999. Following graduation, she served as a law clerk to Judge J. Harvie Wilkinson III of the U.S. Court of Appeals for the Fourth Circuit and, in the 2001 October Term, as law clerk to Justice Clarence Thomas of the U.S. Supreme Court. Between her clerkships, Judge Rao served as counsel for nominations and constitutional law to the U.S. Senate Committee on the Judiciary. In 2002, she joined the international arbitration group of Clifford Chance LLP in London, England. From 2005-2006, she served as Special Assistant and Associate White House Counsel to President George W. Bush. From 2006 to 2017, Judge Rao was a professor at the Antonin Scalia Law School at George Mason University, where she taught constitutional law, legislation and statutory interpretation, and the history and foundations of the administrative state. In 2014, she founded the Center for the Study of the Administrative State, a non-profit Center that promotes academic scholarship and public policy debates about administrative law. In July 2017, she was appointed to serve as the Administrator of the Office of Information and Regulatory Affairs in the Office of Management Budget. She served in this position until her appointment to the D.C. Circuit.
Remembering William Consovoy
DC Young Lawyers Chapter, George Mason Student Chapter
Arlington, VASupreme Court Preview: What Is in Store for October Term 2023?
Erin M. Hawley, Sarah Isgur, Robert Leider, Jenn L. Mascott, Jeffrey Rosen, Nicholas Quinn Rosenkranz
On September 26, 2023, the Federalist Society's Faculty Division and Practice Groups will host a panel at the Mayflower...
Supreme Court Preview: What Is in Store for October Term 2023?
Co-Sponsored by the Faculty Division and Practice Groups
Washington, DCV: Modern Debates, Old Insights: The Federalists, Anti-Federalists, and Executive Power (Panel)
Jenn L. Mascott, Paul B. Matey, Julian Davis Mortenson, Saikrishna Prakash, Michael B. Rappaport
In the contemporary debates over the nature of executive power, two ideas are perennially prominent...
V: Modern Debates, Old Insights: The Federalists, Anti-Federalists, and Executive Power (Panel)
Jenn L. Mascott, Paul B. Matey, Julian Davis Mortenson, Saikrishna Prakash, Michael B. Rappaport
In the contemporary debates over the nature of executive power, two ideas are perennially prominent...
V: Modern Debates, Old Insights: The Federalists, Anti-Federalists, and Executive Power (Panel)
2022 National Student Symposium
Charlottesville, VAArthrex: The End of Patent Exceptionalism in the Administrative State?
A Regulatory Transparency Project Webinar
TeleforumArthrex: The End of Patent Exceptionalism in the Administrative State?
Gary Lawson, Jenn L. Mascott, Kristen Osenga, Jonathan Stroud
The decision in United States v. Arthrex was extremely fractured, with a mix of majority, concurring, and...
Necessary & Proper Episode 67: Non-Delegation? Or No Divesting? Art. I, Sec. 1 at the Founding and Today
Nicholas Bagley, Philip A. Hamburger, Jenn L. Mascott, Nicholas R. Parrillo, Neomi Rao
On May 17, as part of their annual Executive Branch Review Conference, the Federalist Society's...
Non-Delegation? Or No Divesting? Art. I, Sec. 1 at the Founding and Today
Administrative Law & Regulation and Federalism & Separation of Powers Practice Groups